Force cup



0. E. CLARK Sept. 17, 1929.

FORCE CUP Filed 001;. 27. 1926 Patented Sept. 17, 1929 UNITED STATES PATENT OFFICE FORGE CUP Application filed October 27, 1926. Serial No. 144,609.

The present invention relates to improvements in devices for cleaning the drain pipes of kitchen sinks and the like.

The primary object is to produce an inexpensive device of a simple character that can be sold at low cost, and is adapted for domestic use, so that the force of the water supply can be effectively utilized to force out accumulations in a drain pipe, and thus open such pipe.

The preferred embodiment of the invention is illustrated in the accompanying drawings, wherein:

Figure 1 is a. side elevation of the device showing its applicability,

Figure 2 is a top plan view of the drain cleaner head,

Figure 3 is a vertical sectional view therethrough,

Figure 4 is a detail sectional view on an enlarged scale through the packing gasket prior to its insertion in the shell.

In the embodiment disclosed, a head 5 is provided, which consists of a head shell 6 and a nipple shell 7. The head shell 6 is preferably formed of sheet metal having a top wall 8, an annular side wall 9 and an inturned lower annular flange 10, The shell thus has a lower open side and the top wall is preferably provided with a central circular opening 13. The nipple shell 7 is also of sheet metal, substantially cylindrical in form, with an inturned bottom wall 1 1 having its central portion downset and passing through the opening 13 of the head shell 6. It is then flanged outwardly, as shown at 15, so that the nipple is thus effectively secured to the top wall 8 by having said top wall clamped between the bottom wall 1 1 and the flange 15. The cylindrical wall of the nipple shell 7 is also provided with an inwardly extending bead 16.

A packing gasket 17 of yielding material is located in the nipple shell 7 below the bead 16, which thus holds it in place. An annular packing gasket 18 is also placed within the head shell against the annular wall 9 thereof, and between the top wall 8 and the flange 10. By referring to Figure l, it will be noted that this gasket is of yielding material, preferably rubber, having a substantially straight body wall 19 with a tapered upper end 20 and an inwardly extending tapered lower end 21. It is provided with a recessed seat 22 for the reception of the flange 10. The length of the wall 19 is somewhat greater than the distance between the top wall 8 of the shell and the flange 10. Consequently when the gasket is placed in position it is compressed to substantially the form shown in Figure 3. This causes the gasket to thus bind snugly against the outer wall 9 and the top wall 8, while the lower portion 21 constitutes a yielding lip that projects through and beyond the lower open side of the body shell 6.

In using this device, a short piece of ordinary hose, as 23, is provided, with a coupling 24 that is connected to the faucet 25 of the sink and the head is applied over the drain screen, which screen is indicated at 27 in Figure 1. The free end of the hose 23 is inserted into the upper end of the nipple and forced firmly down upon the gasket 17. This in turn causes the lower lip 21 to rest firmly upon the drain screen covering the openings, and making a tight seal. It now the faucet 25 is opened, the water under pressure will flow through the hose 23 and head, and the force of this water passing through the drain will drive out any accumulation or obstruction therein.

It will be evident that the head disclosed is a complete article of manufacture that is relatively inexpensive inasmuch as the parts can be easily produced and assembled. The device has been found very efficacious for the purposes indicated.

From the foregoing, it is thought that the construction, operation and many advantages of the herein described invention will be apparent to those skilled in the art, without further description, and it will be understood that various changes in the size, shape, proportion and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

What I claim is:

1. A head for drain cleaners, comprising a 1 head shell having a nipple for the attachment of a hose, said head shell having a top wall, an annular side Wall, and an open side with an inturned flange at said open side, and a yielding gasket ring in the head shell and against the outer wall thereof, said ring being compressed between the top wall and the flange and having a lip projecting through and beyond the open side.

10 2. A head for drain cleaners comprising a head shell having a nipple for the attach ment of a hose, said head shell having a top wall, an annular side Wall and an open side with an inturned flange at said open side, and a yielding gasket ring in the head shell and against the outer wall thereof, said ring having a tapered upper end and a tapered lower end and being compressed between the top wall and the flange with its lower end projecting beyond the flange and side wall to form a yielding packing lip.

In testimony whereof, I affix my signature.

OMAR E. CLARK. 

